Shabirna, Explorer of Realms

Lifelink, Haste
Whenever Shabirna, Explorer of Realms enters
the battlefield or attacks, you may search your
library for a basic plains, then if an opponent
controls more lands than you, you may put that
land onto the battlefield tapped, otherwise put it
into your hand.
Whenever Shabirna, attacks, if the defending
player has more creatures than you, Shabira deals
damage to each creature that player controls
equal to the difference.